31 January 2005 Mid-IR type-II interband cascade lasers and their applications
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Type-II interband cascade lasers are efficient and compact mid-infrared (3-5 μm) light sources with many applications such as gas sensing and environmental monitoring. Significant progress toward such a goal has recently been made in terms of achieving low threshold current densities (e.g. ~8 A/cm2 at 80 K), high temperature operation (e.g. 325 K in pulsed and 217 K in cw modes), and continuous wave operation of single-mode distributed feedback (DFB) lasers. These DFB lasers have been integrated into laboratory spectrometers for detection of gases such as CH4 and HCl. One laser was flown on a high-altitude balloon instrument and measured HCl profiles in the stratosphere as part of Aura satellite instrument validation. We review the recent progress of Sb-based mid-IR IC lasers and address the requirements for further improvements in their performance.
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Rui Q. Yang, Rui Q. Yang, Cory J. Hill, Cory J. Hill, Lance E. Christensen, Lance E. Christensen, Christopher R. Webster, Christopher R. Webster, } "Mid-IR type-II interband cascade lasers and their applications", Proc. SPIE 5624, Semiconductor and Organic Optoelectronic Materials and Devices, (31 January 2005); doi: 10.1117/12.581109; https://doi.org/10.1117/12.581109

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